How can PHP developers ensure that their code accurately identifies crawlers like Googlebot without risking cloaking penalties from search engines like Google?

To accurately identify crawlers like Googlebot without risking cloaking penalties, PHP developers can use the user-agent string provided by the crawler to determine its identity. By checking the user-agent string against a list of known crawler user-agents, developers can serve specific content to crawlers while still providing the same content to regular users. 

$userAgent = $_SERVER['HTTP_USER_AGENT'];

if (strpos($userAgent, 'Googlebot') !== false) {
    // Serve specific content for Googlebot
} else {
    // Serve regular content
}

Keywords

Googlebot cloaking penalties user agent detection PHP headers search engine optimization

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